From: ucwong <ucwong@126.com>
Date: Thu, 30 May 2024 23:16:37 +0000 (+0100)
Subject: clone func used since go 1.21 (#947)
X-Git-Tag: v1.56.0~2
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=d196bf9c1c5b90580b0a1847f36bd77f802d270a;p=btrtrc.git

clone func used since go 1.21 (#947)
---

diff --git a/metainfo/announcelist.go b/metainfo/announcelist.go
index f19af14c..3bed58d6 100644
--- a/metainfo/announcelist.go
+++ b/metainfo/announcelist.go
@@ -1,12 +1,13 @@
 package metainfo
 
+import (
+	"slices"
+)
+
 type AnnounceList [][]string
 
-func (al AnnounceList) Clone() (ret AnnounceList) {
-	for _, tier := range al {
-		ret = append(ret, append([]string(nil), tier...))
-	}
-	return
+func (al AnnounceList) Clone() AnnounceList {
+	return slices.Clone(al)
 }
 
 // Whether the AnnounceList should be preferred over a single URL announce.